She said: “Schools in Wakefield are already under pressure, hit by government cuts to their maintenance budgets, and higher national insurance and pension contributions.”

An analysis by the National Union of Teachers (NUT) and Association of Teachers and Lecturers (ATL) said Hemsworth Arts and Community College would see a change in its budget of £462,514 between now and 2019.

That would be equivalent to £415 per pupil and 15 teaching jobs.

Pontefract’s Halfpenny Lane Junior and Infant School was facing a £185,886 funding cut - or £469 per pupil and five teachers.

New College Pontefract’s budget could fall by £717,970 over the same period, equivalent to 39 teaching assistants, said the unions. Their School Cuts website said: “Unless the government allocates more money, this college faces a funding cut of 8 per cent per student in real terms between 2015 and 2020, on top of the 12 per cent cuts suffered from 2010 to 2015.”

Kevin Courtney, general secretary of the NUT said: “No headteacher should be put in the position of increasing class sizes, leaving building repairs undone or cutting staff and resources simply to balance the books. Nor should any parent accept this for their child. We are one of the richest countries in the world.

“We can and we should be funding our schools properly.”

Mary Bousted, general secretary of the ATL, added: “If the government doesn’t increase the overall amount of funding for schools, a generation of children will have a severely restricted education with nothing beyond the basic curriculum and thousands of school staff will lose their jobs.”